Yes, it does give 80 AP. However, it's 550 extra gold for 40 extra AP at the cost of the 10 mana regen and reduced camp clearing speed, not to mention if you can't straight up buy WotA you will awkwardly sit on a Kage's Lucky Pick and revolver. You can take wolves/wraiths a couple of seconds faster with the 30% bonus damage, not to mention you heal more per mana from those monsters as well.

If you're going to buy Spellvamp on Cassiopeia at all you want to spend as little money on it as possible and actually get your AP items. Spending 1.3k instead of 700 gold to complete your "big" spellvamp item hardly helps; it could be the difference between having parts, or a completed Zhonya's Hourglass.

WOTA actually gives you 80 ap if I'm not mistaken.

I don't think I would go Spirit anymore because the item got nerfed quite hard on lane champs. Especially if I have another champ benefiting from the AP

I was initially hesitant do go full utility on her, but I base her around spell vamp. However, the sacrifice in potential is significant, yes, with wanted points in Vampirism . I've found the extra 3% helpful early game, but is only a minimal amount to what you can actually build. I'm going to go back and see the effects of a 21/0/9. As for the CDR, the only item I've implemented to serve that function is Athene's Unholy Grail and Deathfire Grasp, items I would only recommend taking in certain situations and stated as such, but put them in as not everyone plays the same. Just because I say "You should take a Tear doesn't mean they are going to if they prefer a Chalice. At that point, it comes down to comfort-ability. I don't think she needs the CDR, honestly, and her passive takes care of that.

With Cassiopeia's skills, I chose to take an early point into Noxious Blast because of the slight increase of power and that early on, you are teetering on the edge of the laning phase and mana is precious. Wasting Miasma's 70 cost versus Noxious Blast's 45, provided her passive has 0 stacks, isn't exactly helpful. I've given priority to her Twin Fang for the early engages based on this.

As for Will of the Ancients, I originally took Spirit of the Spectral Wraith on her and while playing a few games, one of the gentlemen I was playing with noticed and mentioned using WotA instead. I hesitantly tried WotA and found it to be much more effective. With Will of the Ancients, you get a boost of 80 AP and 20% Spell Vamp with a cost of 2550 gold. Spirit of the Spectral Wraith sits at a cost of 2000 with a bonus of 40 AP, 10 mana regen, 10% CDR, and the same amount of spell vamp, 20%. However, you have two passives that don't even apply to you, with extra damage towards monsters and a CDR on Smite. Having originally used this item, and then switching to Will of the Ancients, which also helps allies.. Cassiopeia isn't a support and shouldn't be treated as such, yes. Having gone through this debacle with myself numerous times, it's frustrating when it comes to WotA for me. I'm going to go back and re-evaluate this, just so I can offer the right information. Thank you for pointing it out!

Good formatting but the concept is inherently questionable. Your skill sequence is also all over the place for no good reason.

What, exactly, is the benefit of 9/0/21 over 21/0/9? You are missing out on a SIGNIFICANT amount of damage throughout the game for some CDR (which you don't need), some XP (which makes no difference because you get a level advantage by pushing even if your enemy has a 5% XP bonus), and some bonus MS which very redundant with what you get if you can land Noxious Blast.

WotA is also bad because Spirit of the Spectral Wraith exists.

Oh nuts. Thank you! :D

I'm not a master with cass in the slightest...but the guide is well written and does show good insight.

Just a small coding error in the Counters section under Fizz. You forgot the t in Trickster :P

I really like the concept (full utility Cassiopeia) but I doubt if it really works.

Movespeed quints, scaling instead of flat mr glyphs and 9/0/21 take down your early game potential really hard.

With this setup I might prefer to go with Barrier or Cleanse because you completely rely on DPS and Ignite does not scale as well into late game on a backline champion as these two do.